7 public questions tagged with this topic.
Bronchitis is a respiratory disorder characterized by inflammation of the bronchi due to prolonged exposure to pollutants. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Biology Textbook for Class XI and XII (Zoology section), Chapter: Biology - Zoology portion covering relevant system and function.
Freons are responsible for the depletion of the ozone layer. This follows from NCERT principle where relation explains outcome clearly for students.
Ref: NCERT Chemistry Textbook for Class XI and XII, Chapter: Some Basic Concepts, Structure of Atom, Periodicity and relevant Chemistry topic, Topic: Mole concept and periodic trends.
The association is a lichen. The algal phycobiont prepares food, while the fungal mycobiont provides shelter and absorbs water and minerals. Because lichens do not grow in polluted areas, they indicate air pollution.
Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Bacteria - Structure and Economic Importance
The organism is a lichen, a mutually beneficial association between an algal phycobiont and a fungal mycobiont. The alga prepares food, while the fungus provides shelter and absorbs water and minerals. Lichens do not grow in polluted areas and therefore act as pollution indicators.
Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Bacteria - Structure and Economic Importance
“Habitat destruction and pollution” for aquatic species, such as mollusks, are most threatened by. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Extinction risk rises when abundance, geographic range, or genetic variation becomes small because demographic chance, environmental fluctuations, inbreeding, and rare catastrophes then have disproportionate effects. Correlated losses among subpopulations further weaken regional persistence. The remaining alternatives—“Parasitism”, “Introduced predators
Ref: Conservation Biology, Primack & Sher, 6th Ed., Ch. 7
Detection of microplastics in fish and shellfish provides a credible human-exposure pathway because these organisms are eaten, sometimes whole. The observation establishes potential dietary contact, although it does not by itself quantify absorbed dose or prove a particular disease. Risk assessment must distinguish particle presence in gut contents from edible tissues and consider particle size, additives, preparation, consumption rate, and toxicological evidence. Laboratory effects must be interpreted alongside environmentally realistic concentrations, while field detection demonstrates expos
Ref: Campbell Biology, Urry et al., 12th Ed., Unit 8 Ecology
Rain at pH 4.3 is strongly acidic relative to normal rain, whose pH is near 5.6 because of dissolved carbon dioxide. Since pH is logarithmic, pH 4.3 has about twenty times the hydrogen-ion activity of pH 5.6. Values of 6 or 5.5 are near or only slightly below natural rain acidity, while 7.2 is mildly alkaline. Sound classification links the source, atmospheric fate, exposure route, and mechanism of toxicity rather than relying only on the pollutant's name. Effective management combines cleaner fuels, emission standards, monitoring, urban planning, and protection of populations with high exposu
Ref: Campbell Biology, Urry et al., 12th Ed., Unit 8 Ecology
